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Lakeview Mountains
The Lakeview Mountains are a range of low mountains encompassing approximately of land in western Riverside County, Southern California, at the northern end of the Peninsular Ranges System. Geography The Lakeview Mountains are bordered: *on the south by State Highway 74 and the communities of Homeland and Green Acres *on the east by the cities of Hemet and San Jacinto *on the west by the Perris Valley and the community of Nuevo *on the north by the community of Lakeview and the San Jacinto River. The communities of Juniper Flats and MacLean Ranch are located within the Lakeview Mountains. The highest point in the Lakeview Mountains is at elevation above mean sea level. Mount Rudolph, a prominent feature at the northerly end of the range, rises to an elevation of . ;Petroglyph Reinhardt Canyon, on the easterly side of the range, is the home of the prehistoric petroglyph known as the Hemet Maze Stone (California Historical Landmark No. 557). Flora The vegetation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Double Butte
Double Butte is a mountain distinguished by two buttes, the highest being the western summit at about and the lesser summit being . It is located in Riverside County, California, Riverside County, California. History To the east of the Double Butte, there is a disposal site landfill around the area, but it has been closed in recent years.Valley South Subtransmission Project ''Cpuc.ca.gov'', June 2016 Geography The Double Butte County Regional Park is located in the canyon in the middle of the south side of the range. By 2014, the County Regional Park was still undeveloped and closed to the public. It is the westernmost summit of a mountain range north of Winchester, California, east of Perris V ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Jacinto River (California)
The San Jacinto River is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed March 16, 2011 river in Riverside County, California. The river's headwaters are in Santa Rosa and San Jacinto Mountains National Monument. The lower portion of the watershed is urban and agricultural land. As a partially endorheic watershed that is contiguous with other Great Basin watersheds, the western side of the San Jacinto Basin is a portion of the Great Basin Divide. Course The river is formed at the west base of the San Jacinto Mountains by the confluence of its North and South forks. The South Fork flows from near Santa Rosa Summit, through Pine Meadow and Garner Valley to Lake Hemet, which holds of water. Hemet Dam was built in 1895 to supply water to the city of Hemet. Downstream of the dam, the South Fork joins the North Fork east of the town of Valle Vista near Highway 74, and the main stem of the San Jacinto River continu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Ranges Of Riverside County, California
A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually higher than a hill, typically rising at least above the surrounding land. A few mountains are isolated summits, but most occur in mountain ranges. Mountains are formed through tectonic forces, erosion, or volcanism, which act on time scales of up to tens of millions of years. Once mountain building ceases, mountains are slowly leveled through the action of weathering, through slumping and other forms of mass wasting, as well as through erosion by rivers and glaciers. High elevations on mountains produce colder climates than at sea level at similar latitude. These colder climates strongly affect the ecosystems of mountains: different elevations have different plants and animals. Because of the less hospitable terrain and climate, mountains te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tonalite
Tonalite is an igneous rock, igneous, plutonic (Intrusive rock, intrusive) rock (geology), rock, of felsic composition, with phaneritic (coarse-grained) texture. Feldspar is present as plagioclase (typically oligoclase or andesine) with alkali feldspar making up less than 10% of the total feldspar content. Quartz (SiO2) is present as more than 20% of the total quartz-alkali feldspar-plagioclase-feldspathoid (QAPF classification, QAPF) content of the rock. Amphiboles and biotite are common in lesser quantities, while accessory minerals include apatite, magnetite and zircon. In older references tonalite is sometimes used as a synonym for quartz diorite. However the current IUGS QAPF diagram, classification defines tonalite as having greater than 20% quartz, while quartz diorite varies its quartz content from 5 to 20%. The name is derived from the type locality of tonalites, adjacent to the Tonale Line, a major structural lineament and mountain pass, Tonale Pass, in the Italy, Itali ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretaceous
The Cretaceous ( ) is a geological period that lasted from about 143.1 to 66 mya (unit), million years ago (Mya). It is the third and final period of the Mesozoic Era (geology), Era, as well as the longest. At around 77.1 million years, it is the ninth and longest geological period of the entire Phanerozoic. The name is derived from the Latin , 'chalk', which is abundant in the latter half of the period. It is usually abbreviated K, for its German translation . The Cretaceous was a period with a relatively warm climate, resulting in high Sea level#Local and eustatic, eustatic sea levels that created numerous shallow Inland sea (geology), inland seas. These oceans and seas were populated with now-extinct marine reptiles, ammonites, and rudists, while dinosaurs continued to dominate on land. The world was largely ice-free, although there is some evidence of brief periods of glaciation during the cooler first half, and forests extended to the poles. Many of the dominant taxonomic gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pluton
In geology, an igneous intrusion (or intrusive body or simply intrusion) is a body of intrusive igneous rock that forms by crystallization of magma slowly cooling below the surface of the Earth. Intrusions have a wide variety of forms and compositions, illustrated by examples like the Palisades Sill of New York and New Jersey; the Henry Mountains of Utah; the Bushveld Igneous Complex of South Africa; Shiprock in New Mexico; the Ardnamurchan intrusion in Scotland; and the Sierra Nevada Batholith of California. Because the solid country rock into which magma intrudes is an excellent insulator, cooling of the magma is extremely slow, and intrusive igneous rock is coarse-grained ( phaneritic). Intrusive igneous rocks are classified separately from extrusive igneous rocks, generally on the basis of their mineral content. The relative amounts of quartz, alkali feldspar, plagioclase, and feldspathoid is particularly important in classifying intrusive igneous rocks. Intru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California Montane Chaparral And Woodlands
The California montane chaparral and woodlands is an ecoregion defined by the World Wildlife Fund, spanning of mountains in the Transverse Ranges, Peninsular Ranges, and Coast Ranges of southern and central California. The ecoregion is part of the larger California chaparral and woodlands ecoregion, and belongs to the Mediterranean forests, woodlands, and scrub biome. Geography The ecoregion spreads from low foothills up to the highest peaks of the following ranges: San Bernardino Mountains, San Jacinto Mountains, San Gabriel Mountains, Santa Susana Mountains, Santa Monica Mountains, Sierra Pelona, Topatopa Mountains, Tehachapi Mountains, San Rafael Mountains, Santa Ynez Mountains, and the long Santa Lucia Mountains. The wide elevation range and characteristic climate produce a variety of natural communities, from chaparral to mixed evergreen forest to alpine tundra. File:Angelesnationalforest.jpg, Montane woodlands in the San Gabriel Mountains File:Vasquez Rocks chaparra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coastal Sage Scrub
Coastal sage scrub, also known as coastal scrub, CSS, or soft chaparral, is a low scrubland plant community of the California coastal sage and chaparral subecoregion, found in coastal California and northwestern coastal Baja California. It is within the California chaparral and woodlands ecoregion, of the Mediterranean forests, woodlands, and scrub biome. Characteristics ;Plant community Coastal sage scrub is characterized by low-growing aromatic, and drought-deciduous shrubs adapted to the semi-arid Mediterranean climate of the coastal lowlands. The community is sometimes called "soft chaparral" due to the predominance of soft, drought-deciduous leaves in contrast to the hard, waxy-cuticled leaves on sclerophyllous plants of California's chaparral communities. ;Flora Characteristic shrubs and subshrubs include: * California sagebrush (''Artemisia californica'') * Black sage (''Salvia mellifera'') * White sage (''Salvia apiana'') * California buckwheat (''Eriogonum fasci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California Historical Landmark
A California Historical Landmark (CHL) is a building, structure, site, or place in the U.S. state of California that has been determined to have statewide historical landmark significance. Criteria Historical significance is determined by meeting at least one of these criteria: # The first, last, only, or most significant of its type in the state or within a large geographic region (Northern California, Northern, Central California, Central, or Southern California); # Associated with an individual or group having a profound influence on the history of California; or # An outstanding example of a period, style, architectural movement or construction; or is the best surviving work in a region of a pioneer architect, designer, or master builder. Other designations California Historical Landmarks numbered 770 and higher are automatically listed in the California Register of Historical Resources. A site, building, feature, or event that is of local (city or county) significance may ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemet Maze Stone
The Hemet Maze Stone is a prehistoric petroglyph. It is just outside Hemet, in Reinhardt Canyon, within the Lakeview Mountains, in Riverside County, California. On April 16, 1956, Mr. and Mrs. Rodger E. Miller donated the stone, along with of associated land, to Riverside County. It is California Historical Landmark No.557. The government installed two perimeter chain link fences around the petroglyph landmark for protection. The surrounding land has been set aside for the protection of native plants and animals (with a warning that the "natural features may be hazardous"). The property is located at the end of California Avenue to the north of Highway 74 and several miles east of Interstate 215. The road has been blocked off to prevent people from driving too close to the Maze Stone. Features The stone and its surrounding land were designated as a California state landmark in 1956. Sometime later, a vandal added a counter-clockwise swastika The swastika (卐 or 卍, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petroglyph
A petroglyph is an image created by removing part of a rock surface by incising, picking, carving, or abrading, as a form of rock art. Outside North America, scholars often use terms such as "carving", "engraving", or other descriptions of the technique to refer to such images. Petroglyphs, estimated to be 20,000 years old are classified as protected monuments and have been added to the tentative list of UNESCO's World Heritage Sites. Petroglyphs are found worldwide, and are often associated with prehistoric peoples. The word comes from the Greek prefix , from meaning " stone", and meaning "carve", and was originally coined in French as . In scholarly texts, a ''petroglyph'' is a rock engraving, whereas a '' petrograph'' (or ''pictograph'') is a rock painting. In common usage, the words are sometimes used interchangeably. Both types of image belong to the wider and more general category of rock art or parietal art. Petroforms, or patterns and shapes made by man ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reinhardt Canyon
Reinhardt Canyon is located in the Lakeview Mountains, just west of Hemet in Riverside County, California. The prehistoric petroglyph known as the Hemet Maze Stone, California Historical Landmark A California Historical Landmark (CHL) is a building, structure, site, or place in the U.S. state of California that has been determined to have statewide historical landmark significance. Criteria Historical significance is determined by meetin ... No. 557, is located in the canyon. References Canyons and gorges of California Landforms of Riverside County, California Hemet, California Archaeological sites in California {{RiversideCountyCA-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
